现代汉语中有一类表示“谁(什么人或什么事物)是怎么样”的句子。这类句子对一定的“人”或“事物”进行描述,表达描述者对所要描述的“人”或“事物”具有或不具有某种属性、行为,存在或不存在某种后果的认定。我们把这类句子叫做“是”字认定句。长期以来,由于“是”字被认作判断词,使“是”字认定句淹没在“是”字判断句之中。 There is a sentence in modern Chinese that says “who (who or what) is like?” Such sentences describe certain “persons” or “things”, and express whether the description person has or does not have certain attributes, behaviors, and the existence or absence of certain consequences for the “person” or “thing” to be described. We refer to these sentences as “yes” word recognition sentences. For a long time, since the word “is” was considered as a judgment word, the affirmation sentence of “is” was submerged in the judgement sentence of “yes”.